Important: Click on the different icons for: Dronedata Back Office Server Generated Quality Report Phase 1 Time 07h:33m:02s Phase 2 Time 02h:58m:08s Phase 3 Time Not Applicable Total Time All Phases 10h:31m:08s Generated with Pix4Dmapper Pro - TRIAL version 2.0.104 Help to analyze the results in the Quality Report Additional information about the sections Click here for additional tips to analyze the Quality Report Summary Project Bridge Column Inspection Processed 2016-02-11 02:36:54 Average Ground Sampling Distance (GSD) 0.1 cm / 0.03 in Time for Initial Processing (without report) 07h:33m:02s Quality Check Images Dataset Camera Optimization Matching Georeferencing median of 39660 keypoints per image 151 out of 151 images calibrated (100%), all images enabled 0.06% relative difference between initial and optimized internal camera parameters median of 20413.9 matches per calibrated image, no 3D GCP Calibration Details Number of Calibrated Images 151 out of 151 Number of Geolocated Images 151 out of 151 Initial Image Positions Figure 2: Top view of the initial image position. The green line follows the position of the images in time starting from the large blue dot.
Computed Image/GCPs/Manual Tie Points Positions Figure 3: Offset between initial (blue dots) and computed (green dots) image positions as well as the offset between the GCPs initial positions (blue crosses) and their computed positions (green crosses) in the top-view (XY plane), front-view (XZ plane), and side-view (YZ plane). Bundle Block Adjustment Details Number of 2D Keypoint Observations for Bundle Block Adjustment 2922816 Number of 3D Points for Bundle Block Adjustment 899382 Mean Reprojection Error [pixels] 0.179289 Internal Camera Parameters exom_8.0_7152x5368(ex-00-24144) (RGB). Sensor Dimensions: 10.013 [mm] x 7.515 [mm] EXIF ID: exom_8.0_7152x5368 Focal Length Principal Point x Principal Point y R1 R2 R3 T1 T2 Initial Values 5672.979 [pixel] 7.942 [mm] 3576.000 [pixel] 5.006 [mm] 2684.000 [pixel] 3.758 [mm] 0.242-0.643 0.506 0.000 0.001 Optimized Values 5676.646 [pixel] 7.947 [mm] 3589.868 [pixel] 5.026 [mm] 2702.188 [pixel] 3.783 [mm] 0.247-0.667 0.533 0.000 0.000
The number of Automatic Tie Points (ATPs) per pixel averaged over all images of the camera model is color coded between black and white. White indicates that, in average, more than 16 ATPs are extracted at this pixel location. Black indicates that, in average, 0 ATP has been extracted at this pixel location. Click on the image to the see the average direction and magnitude of the reprojection error for each pixel. Note that the vectors are scaled for better visualization. 2D Keypoints Table Number of 2D Keypoints per Image Number of Matched 2D Keypoints per Image Median 39660 20414 Min 20298 2249 Max 72678 33393 Mean 39183 19356 3D Points from 2D Keypoint Matches Number of 3D Points Observed In 2 Images 515118 In 3 Images 163696 In 4 Images 79707 In 5 Images 45810 In 6 Images 28160 In 7 Images 18110 In 8 Images 11808 In 9 Images 8408 In 10 Images 6339 In 11 Images 4861 In 12 Images 3669 In 13 Images 2999 In 14 Images 2261 In 15 Images 1765 In 16 Images 1447 In 17 Images 1079 In 18 Images 858 In 19 Images 716 In 20 Images 563 In 21 Images 396 In 22 Images 367 In 23 Images 290 In 24 Images 260 In 25 Images 223 In 26 Images 152 In 27 Images 120 In 28 Images 75 In 29 Images 54 In 30 Images 32 In 31 Images 18 In 32 Images 7 In 33 Images 12 In 34 Images 1 In 35 Images 1 2D Keypoint Matches
Number of matches 25 222 444 666 888 1111 1333 1555 1777 2000 Figure 5: Top view of the image computed positions with a link between matching images. The darkness of the links indicates the number of matched 2D keypoints between the images. Bright links indicate weak links and require manual tie points or more images. Geolocation Details Absolute Geolocation Variance 0 out of 151 geolocated and calibrated images have been labeled as inaccurate. Min Error [m] Max Error [m] Geolocation Error X [%] Geolocation Error Y [%] Geolocation Error Z [%] - -9.60 0.00 0.00 3.97-9.60-7.68 0.00 0.00 4.64-7.68-5.76 1.32 0.00 8.61-5.76-3.84 4.64 2.65 15.23-3.84-1.92 22.52 7.95 18.54-1.92 0.00 18.54 39.07 11.26 0.00 1.92 35.10 41.06 15.23 1.92 3.84 13.25 9.27 5.96 3.84 5.76 4.64 0.00 3.97 5.76 7.68 0.00 0.00 1.32 7.68 9.60 0.00 0.00 11.26 9.60-0.00 0.00 0.00 Mean [m] -0.140306-0.004822-1.157862 Sigma [m] 2.513917 1.582153 5.080582 RMS Error [m] 2.517829 1.582161 5.210850 Min Error and Max Error represent geolocation error intervals between -1.5 and 1.5 times the maximum accuracy of all the images. Columns X, Y, Z show the percentage of images with geolocation errors within the predefined error intervals. The geolocation error is the difference between the intial and computed image positions. Note that the image geolocation errors do not correspond to the accuracy of the observed 3D points. Relative Geolocation Variance Relative Geolocation Error Images X [%] Images Y [%] Images Z [%] [-1.00, 1.00] 76.82 96.03 60.26 [-2.00, 2.00] 100.00 100.00 84.11 [-3.00, 3.00] 100.00 100.00 95.36 Mean of Geolocation Accuracy [m] 3.293768 3.293768 4.396477 Sigma of Geolocation Accuracy [m] 0.849930 0.849930 1.169825
Images X, Y, Z represent the percentage of images with a relative geolocation error in X, Y, Z. Geolocation Orientational Variance RMS [degree] Omega 34.875906 Phi 41.146388 Kappa 24.394406 Processing Options Geolocation RMS error of the orientation angles given by the difference between the initial and computed image orientation angles. Hardware Operating System Camera Model Name Image Coordinate System Output Coordinate System CPU: Intel(R) Xeon(R) CPU E5410 @ 2.33GHz RAM: 32GB GPU: RDPUDD Chained DD (Driver: unknown) Windows Server 2012 R2 Standard, 64-bit exom_8.0_7152x5368(ex-00-24144) (RGB) WGS84 WGS84 / UTM zone 32N (egm96) Keypoints Image Scale Full, Image Scale: 1 Advanced: Matching Image Pairs Advanced: Matching Strategy Advanced: Keypoint Extraction Advanced: Calibration Free Flight or Terrestrial Use Geometrically Verified Matching: no Targeted Number of Keypoints: Automatic Calibration Method: Standard, Internal Parameters Optimization: All, External Parameters Optimization: All, Rematch: Point Cloud Densification details Processing Options Image Scale multiscale, 1/2 (Half image size, Default) Point Density Optimal Minimum Number of Matches 3 3D Textured Mesh Generation, Maximum Number of Triangles: 1000000, Texture Size: 8192x8192 Advanced: Matching Window Size 9x9 pixels Advanced: Image Groups group1 Advanced: Use Densification Area Advanced: Use Annotations Advanced: Limit Camera Depth Automatically Time for Point Cloud Densification 02h:32m:46s Time for 3D Textured Mesh Generation 25m:22s Results Number of Generated Tiles 7 Number of 3D Densified Points 38362882 Average Density (per m 3 ) 4.16029e+06